package com.ktjiaoyu.springsecuritydemo.service;

import org.springframework.security.core.authority.AuthorityUtils;
import org.springframework.security.core.userdetails.User;
import org.springframework.security.core.userdetails.UserDetails;
import org.springframework.security.core.userdetails.UserDetailsService;
import org.springframework.security.core.userdetails.UsernameNotFoundException;
import org.springframework.security.crypto.password.PasswordEncoder;
import org.springframework.stereotype.Service;

import javax.annotation.Resource;
import java.nio.file.attribute.UserDefinedFileAttributeView;

/**
 * @Author JieGe
 * @Create 2022/1/4 - 23:31
 * @Description UserDetailsService接口实现类
 */
@Service("userDetailsService")
public class UserDetailsServiceImpl implements UserDetailsService {
    @Resource
    private PasswordEncoder pw;
    @Override
    public UserDetails loadUserByUsername(String username) throws UsernameNotFoundException {
        // 1、查询数据库判断用户名是否存在，如果不存在就会抛出UsernameNotFoundException异常
        if (!"admin".equals(username)) {
            throw new UsernameNotFoundException("用户名不存在！");
        }
        // 2、把查询出来的密码(注册时已经加密过的)进行解析，或者直接把密码放入构造方法中
        String password = pw.encode("123");
        return new User(username,password,
                AuthorityUtils
                        .commaSeparatedStringToAuthorityList("admin,/insert,/delete,ROLE_abc"));
    }
}
